Quick answers
- Which hospitals does Gregory R. Riva work at?
- Medicare's official clinician data lists Gregory R. Riva at 1 hospital: Hemet Global Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory R. Riva see patients?
- Medicare's clinician data lists 1 practice location in Hemet, CA. Call before your visit to confirm the address.
- What is Gregory R. Riva's specialty?
- Medicare lists Cardiac Electrophysiology as the primary specialty, and also Cardiovascular Disease (Cardiology) and Internal Medicine.
- Does Gregory R. Riva accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory R. Riva accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Gregory R. Riva offer telehealth?
- Medicare's clinician data says Gregory R. Riva offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory R. Riva?
- (951) 652-5555, as listed in official Medicare / NPI Registry data.
- What is Gregory R. Riva's NPI number?
- 1700088630. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory R. Riva works
Medicare's Facility Affiliation Data lists Gregory R. Riva at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hemet Global Medical CenterHemet, CA · Acute Care Hospital · CCN 050390
Practice locations
Addresses where Gregory R. Riva is enrolled with Medicare (CMS data updated 2026-10-02).
- 1275 E Latham Ave, Suite AHemet, CA 92543 (951) 652‑5555
Group practices
Medicare enrollment lists Gregory R. Riva as a member of this group (CMS data updated 2026-10-02).
- Anil Rastogi MD Inc3 clinicians in the group
Specialties
Find other Cardiac Electrophysiology doctors in California →
Other cardiac electrophysiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Eastern Virginia Medical School |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1700088630 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians